The inverse CDFs of IMFs, (A) IMF 2 of X and of the added noise channel; (B) IMF 5 of Z and of the added noise channel.

<p>Note that the IMF 5 of Z refers to the sine wave component of 26 Hz. It is clear that the significant information-bearing component (red solid in (B)) is clearly different from the IMF obtained from the noise reference (blue dash in (B)) in terms of inverse CDF, whereas the IMF without significant information content (red solid in (A)) almost completely overlaps with the noise IMF (blue dash in (A)).</p>